fathom line

A study for ambiguity in tracing depth contour on regular grid;

網格法追蹤(等)深線的多義性問題研究

Grid contouring is one of methods often used for drawing depth contours by computers.

在港口工程水深測量中,由于水深處理的特殊要求,可能會遇到常規的繪制等值線方法難以解決的問題,如(等)深線向淺水方向拓展、制圖區域的不規則性、水深網格方向的任意性以及網格的不等尺度性。